Precision membrane filter

Abstract

The utility model relates to the related technical field of rare earth hydrometallurgy, in particular to a precise membrane filter which comprises a filter cartridge, a liquid inlet pipe is connected to the middle of the filter cartridge, a water pump is mounted at one end of the liquid inlet pipe, a liquid outlet control valve is mounted in a liquid outlet pipe, and a collecting barrel is connected to the other end of the liquid outlet pipe. And the bottom of the filter cartridge is connected with a slag discharge pipe, a slag discharge control valve is installed in the slag discharge pipe, a controller is installed on one side of the surface of the supporting frame, and a partition plate is fixedly connected into the filter cartridge. When the precise membrane filter is used and the filter screen is blocked by solid particles, the liquid outlet control valve is controlled to be closed at the moment, then the filter cake is rapidly separated from the surface of the filter screen and settles into the settling bin at the conical bottom of the filter cartridge by utilizing the downward back flushing of the filtered clear liquid, and the residue discharge control valve is opened; at the moment, filter cakes which settle at the bottom of the filter cartridge and are accumulated in the slag discharging opening are rapidly discharged through the slag discharging pipe.

Description

Technical Field

[0001] The utility model relates to the technical field related to rare earth hydrometallurgy, in particular to a precision membrane filter. Background Art

[0002] Due to the decline in ore quality, the rare earth acid-soluble feed contains insoluble solid particles. The supernatant after acid dissolution and the acid-soluble rare earth feed after filter pressing contain fine particles such as iron hydroxide and aluminum hydroxide, which are suspended and difficult to settle. A solid-liquid separation device is planned to be used to purify the feed for subsequent production. To ensure continuous production operation and improve the cleanliness of the feed before entering the downstream stage, more sophisticated and automated filtration equipment is required to reduce production costs. Therefore, precision membrane filters are particularly needed.

[0003] However, in the process of using existing precision membrane filters, the internal filter screen is often installed and fixed by bolts. This operation is cumbersome and increases the workload of operators. It takes a lot of time to install and fix the filter, which affects the filtration efficiency of the filter. Utility Model Content

[0004] The purpose of the present invention is to provide a precision membrane filter to solve the problem of the existing precision membrane filter proposed in the above background technology. During use, when installing the internal filter screen, it is often installed and fixed by bolts. This operation is cumbersome and increases the workload of the operators. It takes a lot of time to install and fix the filter, which affects the filtering efficiency of the filter.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precision membrane filter, comprising a filter cartridge, a support frame fixedly connected to the surface of the filter cartridge, a guardrail installed on one side of the surface of the support frame, a staircase installed on the bottom of the support frame, a liquid inlet pipe connected to the middle of the filter cartridge, a water pump installed at one end of the liquid inlet pipe, a liquid outlet pipe connected to the upper part of the filter cartridge, a liquid outlet control valve installed inside the liquid outlet pipe, a collection bucket connected to the other end of the liquid outlet pipe, a slag discharge pipe connected to the bottom of the filter cartridge, a slag discharge control valve installed inside the slag discharge pipe, a controller installed on one side of the surface of the support frame, and a partition fixedly connected to the inside of the filter cartridge;

[0006] The mounting mechanism includes a support column, a movable groove, a limit groove, a limit block, a steel cable, a reset spring and a pull ring. The inner wall of the filter cartridge is fixedly connected to the support column, the inner wall of the filter cartridge is provided with a movable groove, a limit groove is provided on one side of the surface of the partition, a limit block is embedded in the interior of the movable groove, one end of the limit block is fixedly connected to the steel cable, the surface of the steel cable is provided with a reset spring, and one end of the steel cable is fixedly connected to the pull ring.

[0007] Preferably, the upper portion of the filter cartridge is a circular cylinder, the lower portion of the filter cartridge is a cone, the lower portion of the filter cartridge is a sedimentation bin, and the filter cartridge is made of carbon steel rubber lining.

[0008] Preferably, the liquid outlet control valve is a pneumatically controlled flexible valve, and the liquid outlet control valve is electrically connected to the controller.

[0009] Preferably, the partition is a porous plate structure, and the partition separates the interior of the filter cartridge into a clean liquid tank and a raw liquid tank.

[0010] Preferably, one end of the liquid outlet pipe is connected to the interior of the clean liquid tank, and one end of the liquid inlet pipe is connected to the interior of the raw liquid tank.

[0011] Preferably, keels are provided in the pores on the surface of the partition, and a filter is installed inside the partition.

[0012] Preferably, the keel is made of reinforced polypropylene, and the filter is made of polypropylene material by drawing and weaving.

[0013] One end of the limit block is embedded in the limit groove, the return spring is arranged in the movable groove, one end of the return spring is fixedly connected to the limit block, and the other end of the return spring is fixedly connected to the filter cartridge.

[0014] Compared with the prior art, the beneficial effect of the present invention is that when the filter screen is blocked by solid particles during use, the liquid outlet control valve is closed by controlling the filter screen, and then the clear liquid filtered by itself is backwashed downward, and the filter cake quickly leaves the surface of the filter screen and settles to the sedimentation bin at the conical bottom of the filter tube. The slag discharge control valve is opened, and the filter cake settled at the bottom of the filter tube and accumulated in the slag discharge port is quickly discharged. Through the setting of the installation mechanism, when installing and disassembling the partition equipped with the filter screen, only the pull ring needs to be pulled to achieve the limiting condition of the partition screen, thereby facilitating the installation and disassembly of the partition equipped with the filter screen, reducing workload and saving time, thereby improving the filtration efficiency of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a side view of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the filter cartridge and the partition plate cooperating with each other in the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the partition and filter screen cooperating with each other in the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the filter cartridge and the collection barrel cooperating with each other in the utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the installation mechanism of the utility model;

[0020] Figure 6 For this utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0021] In the figure: 1. Filter cartridge; 2. Support frame; 3. Guardrail; 4. Stairs; 5. Liquid inlet pipe; 6. Water pump; 7. Liquid outlet pipe; 8. Liquid outlet control valve; 9. Collection bucket; 10. Slag discharge pipe; 11. Slag discharge control valve; 12. Controller; 13. Partition; 14. Clean liquid tank; 15. Raw liquid tank; 16. Sedimentation tank; 17. Keel; 18. Filter screen; 19. Installation mechanism; 1901. Support column; 1902. Movable groove; 1903. Limiting groove; 1904. Limiting block; 1905. Steel cable; 1906. Return spring; 1907. Pull ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-6The utility model provides a technical solution: a precision membrane filter, comprising a filter cartridge 1, a support frame 2 is fixedly connected to the surface of the filter cartridge 1, a guardrail 3 is installed on one side of the surface of the support frame 2, a staircase 4 is installed at the bottom of the support frame 2, a liquid inlet pipe 5 is connected to the middle of the filter cartridge 1, a water pump 6 is installed at one end of the liquid inlet pipe 5, a liquid outlet pipe 7 is connected to the upper part of the filter cartridge 1, a liquid outlet control valve 8 is installed inside the liquid outlet pipe 7, and a collecting bucket 9 is connected to the other end of the liquid outlet pipe 7, a slag discharge pipe 10 is connected to the bottom of the filter cartridge 1, a slag discharge control valve 11 is installed inside the slag discharge pipe 10, a controller 12 is installed on one side of the surface of the support frame 2, a partition 13 is fixedly connected to the inside of the filter cartridge 1, the slag discharge control valve 11 is closed by the controller 12, and the liquid outlet control valve 8 is controlled to open at the same time, and then the water pump is opened. 6. At this time, the water pump 6 draws the raw liquid into the interior of the filter cartridge 1 through the liquid inlet pipe 5. The raw liquid flows from the raw liquid tank 15 inside the filter cartridge 1 to the clean liquid tank 14. At this time, it passes through the filter screen 18 inside the partition 13, so that the filter screen 18 filters the raw liquid, so that the solid particles and suspended matter in the raw liquid are intercepted by the filter screen 18. Then, it flows through the interior of the collection barrel 9 through the liquid outlet pipe 7 inside the clean liquid tank 14. When the filter screen 18 is blocked, the clear liquid after filtering itself is backwashed downward, and the filter cake quickly separates from the surface of the filter screen 18 and settles into the sedimentation bin 16 at the conical bottom of the filter cartridge 1. The slag discharge control valve 11 is opened by the controller 12. At this time, the filter cake settled at the bottom of the filter cartridge 1 and accumulated in the slag discharge port is quickly discharged from the slag discharge pipe 10, thereby achieving the cleaning of the filter screen 18.

[0024] The mounting mechanism 19 includes a support column 1901, a movable groove 1902, a limiting groove 1903, a limiting block 1904, a steel cable 1905, a reset spring 1906 and a pull ring 1907. The inner wall of the filter cartridge 1 is fixedly connected to the support column 1901, the inner wall of the filter cartridge 1 is provided with a movable groove 1902, a limiting groove 1903 is provided on one side of the surface of the partition 13, the movable groove 1902 is internally engaged with the limiting block 1904, one end of the limiting block 1904 is fixedly connected to the steel cable 1905, and the steel cable 1906 is provided on the inner wall of the filter cartridge 1. The surface of the cable 1905 is provided with a reset spring 1906, and one end of the cable 1905 is fixedly connected to a pull ring 1907. Through the arrangement of the support column 1901, the movable groove 1902, the limit groove 1903, the limit block 1904, the cable 1905, the reset spring 1906 and the pull ring 1907, when in use, when the filter 18 needs to be disassembled, cleaned or replaced, the pull ring 1907 can be pulled, and the pull ring 1907 drives the limit block 1904 to the movable groove 1902 through the cable 1905. 902 moves internally, and at the same time, the return spring 1906 is compressed and deformed. When the limit block 1904 is completely embedded in the movable groove 1902, one end of the limit block 1904 is separated from the interior of the limit groove 1903, so that the limit block 1904 loses its limiting effect on the partition 13, so that the partition 13 can be taken out from the interior of the filter cartridge 1. At this time, the filter screen 18 inside the partition 13 can be cleaned or replaced, and then the partition 13 is placed inside the filter cartridge 1. At this time, the support column 1901 supports the partition 13 and aligns the position of the limit groove 1903 with the movable groove 1902. Then, the force applied to the pull ring 1907 is released, and the reset spring 1906 rebounds and deforms. The rebound-deformed reset spring 1906 drives the limit block 1904 to return to its original position. At this time, one end of the limit block 1904 is embedded in the inside of the movable groove 1902, and the other end is embedded in the inside of the limit groove 1903, so that the limit block 1904 installs and fixes the partition 13.

[0025] Furthermore, the upper part of the filter cartridge 1 is a circular cylinder, the lower part of the filter cartridge 1 is a cone, the lower part of the filter cartridge 1 is a sedimentation bin 16, the filter cartridge 1 is made of carbon steel rubber lining. Through the setting of the filter cartridge 1, when in use, the carbon steel rubber lining filter cartridge 1 has excellent corrosion resistance and wear resistance. Under the action of gravity, a large number of block and cake-shaped mud cakes vertically settle in the turbid liquid of the filter cartridge 1, and accumulate in the sedimentation bin 16 when reaching the conical part.

[0026] Furthermore, the liquid outlet control valve 8 is an air-controlled flexible valve, which is electrically connected to the controller 12. Through the setting of the liquid outlet control valve 8, when in use, since the liquid outlet control valve 8 is an air-controlled flexible valve, the air-controlled flexible valve has the characteristics of the same diameter as the pipe and valve, and rapid opening and closing. It is electrically connected to the controller 12 and can be switched on and off by the controller 12, thereby controlling the circulation inside the liquid outlet pipe 7.

[0027] Furthermore, the partition 13 is a porous plate structure, which separates the interior of the filter cartridge 1 into a clean liquid tank 14 and a raw liquid tank 15. Through the setting of the partition 13, when in use, the partition 13 separates the interior of the filter cartridge 1 into a clean liquid tank 14 and a raw liquid tank 15. When the raw liquid flows from the raw liquid tank 15 to the clean liquid tank 14, it is filtered through the filter screen 18 inside the partition 13.

[0028] Furthermore, one end of the liquid outlet pipe 7 is connected to the interior of the clean liquid tank 14, and one end of the liquid inlet pipe 5 is connected to the interior of the raw liquid tank 15. Through the arrangement of the liquid inlet pipe 5 and the liquid outlet pipe 7, when in use, the liquid inlet pipe 5 facilitates the extraction of the raw liquid into the interior of the filter cylinder 1 through the water pump 6, and then flows from the interior of the raw liquid tank 15 to the interior of the clean liquid tank 14 and is filtered by the filter mesh 18. The liquid outlet pipe 7 facilitates the transportation of the filtered solution from the interior of the clean liquid tank 14 to the interior of the collection barrel 9.

[0029] Furthermore, a keel 17 is provided in the pores on the surface of the partition 13, and a filter screen 18 is installed inside the partition 13. Through the setting of the filter screen 18, when in use, the filter screen 18 can filter the raw liquid flowing through the partition 13, so that the solid particles and suspended matter in the raw liquid are intercepted by the filter screen 18.

[0030] Furthermore, the keel 17 is made of reinforced polypropylene, and the filter screen 18 is made of polypropylene material by drawing and weaving. Through the setting of the keel 17, when in use, since the keel 17 is made of reinforced polypropylene, the keel 17 forms a supporting effect on the filter screen 18, providing stable protection for the filtering work of the filter screen 18.

[0031] Furthermore, one end of the limit block 1904 is embedded in the limit groove 1903, and the return spring 1906 is arranged in the movable groove 1902. One end of the return spring 1906 is fixedly connected to the limit block 1904, and the other end of the return spring 1906 is fixedly connected to the filter cartridge 1. Through the setting of the return spring 1906, when in use, the return spring 1906 rebounds and deforms to drive the limit block 1904 to return to its original position, so that one end of the limit block 1904 is embedded in the movable groove 1902, and the other end is embedded in the limit groove 1903.

[0032] Working principle: The slag discharge control valve 11 is closed by the controller 12, and the liquid discharge control valve 8 is opened at the same time, and then the water pump 6 is turned on. At this time, the water pump 6 draws the raw liquid into the interior of the filter cartridge 1 through the liquid inlet pipe 5. The raw liquid flows from the raw liquid tank 15 inside the filter cartridge 1 to the interior of the clean liquid tank 14. At this time, it passes through the filter screen 18 inside the partition 13, so that the filter screen 18 filters the raw liquid, so that the solid particles and suspended matter in the raw liquid are intercepted by the filter screen 18, and then flows through the collection bucket through the liquid discharge pipe 7 inside the clean liquid tank 14. 9, when the filter screen 18 is blocked, the filtered clear liquid is used to backwash downward, and the filter cake quickly leaves the surface of the filter screen 18 and settles into the sedimentation bin 16 at the conical bottom of the filter cartridge 1. The slag discharge control valve 11 is opened by the controller 12, and the filter cake accumulated at the bottom of the filter cartridge 1 and accumulated in the slag discharge port is quickly discharged through the slag discharge pipe 10, thereby achieving the cleaning of the filter screen 18. When the filter screen 18 needs to be disassembled, cleaned or replaced, the pull ring 1907 can be pulled, and the pull ring 1907 is connected to the steel cable 190 5 drives the limit block 1904 to move into the interior of the movable groove 1902, and at the same time the return spring 1906 is compressed and deformed. When the limit block 1904 is completely embedded in the interior of the movable groove 1902, one end of the limit block 1904 is separated from the interior of the limit groove 1903, so that the limit block 1904 loses its limiting effect on the partition 13, so that the partition 13 can be taken out from the interior of the filter cartridge 1. At this time, the filter screen 18 inside the partition 13 can be cleaned or replaced, and then the partition 13 is placed in the interior of the filter cartridge 1. At this time, the support column 1901 supports the partition 13, and at the same time aligns the position of the limit groove 1903 with the movable groove 1902, and then releases the force applied to the pull ring 1907, and the reset spring 1906 rebounds and deforms. The rebound-deformed reset spring 1906 drives the limit block 1904 to return to its original position. At this time, one end of the limit block 1904 is embedded in the inside of the movable groove 1902, and the other end is embedded in the inside of the limit groove 1903, so that the limit block 1904 installs and fixes the partition 13.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision membrane filter, comprising a filter cartridge (1), characterized in that: The surface of the filter cartridge (1) is fixedly connected to a support frame (2), a guardrail (3) is installed on one side of the surface of the support frame (2), a staircase (4) is installed on the bottom of the support frame (2), a liquid inlet pipe (5) is connected to the middle of the filter cartridge (1), a water pump (6) is installed at one end of the liquid inlet pipe (5), a liquid outlet pipe (7) is connected to the upper part of the filter cartridge (1), a liquid outlet control valve (8) is installed inside the liquid outlet pipe (7), and a collection bucket (9) is connected to the other end of the liquid outlet pipe (7), a slag discharge pipe (10) is connected to the bottom of the filter cartridge (1), a slag discharge control valve (11) is installed inside the slag discharge pipe (10), a controller (12) is installed on one side of the surface of the support frame (2), a partition (13) is fixedly connected to the inside of the filter cartridge (1), and a mounting mechanism (19) is provided inside the filter cartridge (1); The mounting mechanism (19) comprises a support column (1901), a movable groove (1902), a limiting groove (1903), a limiting block (1904), a steel cable (1905), a return spring (1906) and a pull ring (1907); the inner wall of the filter cartridge (1) is fixedly connected to the support column (1901); the inner wall of the filter cartridge (1) is provided with a movable groove (1902); a limiting groove (1903) is provided on one side of the surface of the partition (13); a limiting block (1904) is embedded in the interior of the movable groove (1902); one end of the limiting block (1904) is fixedly connected to the steel cable (1905); the surface of the steel cable (1905) is provided with a return spring (1906); and one end of the steel cable (1905) is fixedly connected to the pull ring (1907).

2. The precision membrane filter according to claim 1, characterized in that: The upper portion of the filter cartridge (1) is a circular cylinder, the lower portion of the filter cartridge (1) is a cone, the lower portion of the filter cartridge (1) is a sedimentation bin (16), and the filter cartridge (1) is made of carbon steel rubber lining.

3. The precision membrane filter according to claim 1, characterized in that: The liquid outlet control valve (8) is a pneumatically controlled flexible valve, and the liquid outlet control valve (8) is electrically connected to the controller (12).

4. The precision membrane filter according to claim 1, characterized in that: The partition (13) is a porous plate structure, and the partition (13) separates the interior of the filter cartridge (1) into a clean liquid tank (14) and a raw liquid tank (15).

5. The precision membrane filter according to claim 1, characterized in that: One end of the liquid outlet pipe (7) is connected to the interior of the clean liquid tank (14), and one end of the liquid inlet pipe (5) is connected to the interior of the raw liquid tank (15).

6. The precision membrane filter according to claim 1, characterized in that: A keel (17) is provided in the pores on the surface of the partition (13), and a filter (18) is installed inside the partition (13).

7. The precision membrane filter according to claim 6, characterized in that: The keel (17) is made of reinforced polypropylene, and the filter screen (18) is made of polypropylene material by drawing and weaving.

8. The precision membrane filter according to claim 1, characterized in that: One end of the limit block (1904) is embedded in the limit groove (1903), the return spring (1906) is arranged in the movable groove (1902), one end of the return spring (1906) is fixedly connected to the limit block (1904), and the other end of the return spring (1906) is fixedly connected to the filter cartridge (1).

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